Results 41 to 50 of about 9,324,719 (299)

Syntheses, Characterization and Biological Activity of Some 1, 2, 4‐Triazole Derivatives [PDF]

Journal of Chemistry, 2009
Syntheses of a series of 3‐alkyl‐4‐ amino‐5‐ cyanomethyl‐4H‐1, 2, 4‐triazoles with active methylene groups are described. The newly synthesized compounds were characterized by spectral and elemental analyses. Some compounds were screened for their antibacterial activity against S. aureus, E. coli, B. subtilis and P. aeruginosa.
R. J. Singh, D. K. Singh
openaire   +2 more sources

Evaluation of some functionalized imidazoles and 1,2,4-triazoles as antioxidant additives for industrial lubricating oils and correlating the results with the structures of additives using empirical AM1 calculations

Journal of Saudi Chemical Society, 2011
Functionalized 4,5-diphenyl-imidazoles, 4,5-diphenyl-1,2,4-triazoles and 5-(o-hydroxyphenyl)-4-phenyl-1,2,4-triazoles at the 2-position with thiol, thiomethyl and thiobenzyl groups, have been tested as antioxidant additives for lubricating oils.
El Sayed H. El Ashry, Esam EL-Rafey, Nadjet Rezki, Hamdy H. Abou-Elnaga, Wedad M. A. Bakry, Yasser M. Boghdadi   +5 more
doaj   +1 more source

Microwave assisted metal-free approach to access 1,2,3-triazoles through multicomponent synthesis

Current Research in Green and Sustainable Chemistry, 2020
The work illustrates multicomponent reaction of aldehydes, nitroalkanes and sodium azide for the metal-free synthesis of N-unsubstituted-1,2,3-triazoles using anthranilic acid as an organocatalyst under microwave irradiation. This is the first ever green
Anirban Garg, Diganta Sarma, Abdul Aziz Ali   +2 more
doaj   +1 more source

Enantioselective Rh-Catalyzed Azide-Internal-Alkyne Cycloaddition for the Construction of Axially Chiral 1,2,3-Triazoles [PDF]

, 2022
Significant advances have been achieved for the construction of chiral skeletons containing 1,2,3-triazoles via transition-metal-catalyzed asymmetric azide–alkyne cycloaddition; however, most of them have been limited to terminal alkynes in the synthesis
Long Li, Wen-Ting Guo (12228872), Yi Chen, Jian Yang (12136), Bo-Han Zhu, Chao Deng (329151), Peng-Cheng Qian, Chao Deng, Wen-Ting Guo, Long-Wu Ye (1507885), Jian Yang, Long Li (6555), Bo-Han Zhu (10103264), Long-Wu Ye, Yi Chen (38576), Peng-Cheng Qian (1997620)   +15 more
core   +1 more source

Copper-Catalyzed AzideAlkyne Cycloaddition of Hydrazoic Acid Formed In Situ from Sodium Azide Affords 4Monosubstituted-1,2,3-Triazoles [PDF]

, 2022
We report a copper-catalyzed cycloaddition of hydrogen azide (hydrazoic acid, HN3) with terminal alkynes to form 4-substituted-1H-1,2,3-triazoles in a sustainable manner.
Martin Gazvoda, Martin Gazvoda (1676941), Dominik Jankovič, Miha Virant, Dominik Jankovič (12078398), Miha Virant (7481720)   +5 more
core   +1 more source

Chemical properties of amino- and thio-derivatives of 1,2,4-triazoles

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2015
Aim. A number of references of the last ten years have been carefully studied with bibliosemantic method to compile information on the participation of 1,2,4-triazoles in chemical reactions. Introduction of new domestic drugs intopractice, which could
A. G. Kaplaushenko
doaj   +1 more source

One‐Dimensional Materials Supported in Two‐Dimensional Van der Waals Metal–Organic Frameworks with Optical Anisotropy Switching via Twist‐Engineering

Advanced Materials, EarlyView.
We introduce a molecular strategy to assemble one‐dimensional (1D) materials into two‐dimensional (2D) van der Waals metal–organic frameworks (MOFs). Crystals of [FeX(pzX)(bpy)] (X = Cl, F) form anisotropic 2D layers that can be mechanically exfoliated into thin sheets.
Eleni C. Mazarakioti, Carla Boix‐Constant, Iván Gómez‐Muñoz, Diego López‐Alcalá, Sergio Revuelta, Marco Ballabio, Vasileios Balos, José J. Baldoví, Enrique Cánovas, Josep Canet‐Ferrer, Guillermo Mínguez Espallargas, Samuel Mañas‐Valero, Eugenio Coronado   +12 more
wiley   +1 more source

Photo‐Triggered, Fast, and Fluorogenic Thiophene‐Based Cycloalkynes for the Bioorthogonal Fluorescent Labeling of 1,3‐Dipole‐Tagged Molecules in No‐Wash Conditions

Angewandte Chemie, EarlyView.
Thiophene is king! The fusion of thiophene rings to cycloalkynes super‐charged their copper‐free click chemistry applications, by (1) enhancing the alkyne reactivity (fastest cyclooctyne to date) and (2) rendering the alkyne fluorogenic (with fluorescence enhancement up to 150‐fold upon reaction), making these bioorthogonal reagents ideal for tracking ...
Jurgen Schulz, Zoeisha S. Chinoy, Tarek Khalaf, Yukang Li, Pengchen Ma, Dennis Svatunek, Kendall N. Houk, Frédéric Friscourt   +7 more
wiley   +2 more sources

Synthesis and structural features of 5-(4-(tert-butyl) phenyl)-4-((R)amino)-4H-1,2,4-triazole-3-thiols

Фармацевтичний журнал, 2018
Chemistry of heterocyclic compounds is one of the most popular sector in organic chemistry. Scientists allocate among them a class of derivatives of 1,2,4-triazole.
I. I. Aksyonova-Seliuk, O. I. Panasenko, E. G. Knysh   +2 more
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source